NOSTRADAMUS · Position Analytics Engine

SIMULATOR Will Brazil win Group C in the 2026 FIFA World Cup?

A live, interactive instrument for dissecting a single binary position. Sweep the inputs and watch every indicator recompute — payoff geometry, Kelly growth, Bayesian posterior, KL divergence, cost waterfall, Monte-Carlo equity fan, forecast calibration. Companion to the live /feed/pm-will-brazil-win-group-c-in-the-2026-fifa-world-cup page.

▲ YES EDGE · +0.013 · f★ 3.8% · deploy 1.9% · net 0.52pp

§1 · Position economics

Payoff diagram · binary contract P/L vs resolution
YES · Expected P/L per share +0.0127@ model P(YES) = 0.678
-1.00-0.50+0.00+0.50+1.000.000.200.400.600.801.00price 0.665model 0.678YES resolution priceP/L per $1 contract
P/L per sharemarket pricemodel Pprofit zoneloss zone
Profit is linear in the eventual settlement price.
Kelly growth curve · g(f) with f★ and deployed f markers
f★ = 3.80% · g(f★) = 0.037%deploy 1.90% · g = 0.027%
-2.11%-1.57%-1.03%-0.50%0.04%0%8%16%24%32%40%f★ optimumdeployfraction of bankroll fexpected log-growth g(f)
g(f)f★ optimumdeployed fgrowth zone
Underbet leaves growth on the table; overbet destroys capital. The interior maximum is f★.

§2 · The trade ticket

Trade ticket · dollar outcomes at this stake
YES @ 0.665 · EV +$9stake $475 · 1.90% of bankroll
Deployed stakestake
$475
1.90% of bankroll
Sharesunits
714
each pays $1 if YES
Max payoutwin
$714
gross, if win
Max profitwin
+$239
net of cost
Max losslose
-$475
binary settles to $0
Payout multiple×
×1.50
$1 → $1.50
Risk:RewardR:R
0.50 : 1
win $0.50 per $1
Expected P/LE[P/L]
+$9
probability-weighted
OutcomeP(model)P/LContribution
Resolves YES (win)67.8%+$239+$162
Resolves against (lose)32.2%-$475-$153
Expected value100.0%+$9
What you actually win and lose. The bottom table tabulates probability-weighted P/L by outcome.

§3 · Break-even & cushion

Break-even & cushion · margin of safety
Cushion +1.3 pprelative edge +1.9%
Required win ratebreak-even
66.5%
price = implied probability
Model win rateP(win)
67.8%
what you forecast
Cushionedge
+1.3 pp
margin of safety
Fair pricemodel
0.678
where you think it should trade
-60-3003060020406080100you @ 66.5%market price (%)cushion (pp)
The market price equals the win rate you must beat to make money.

§4 · Odds conversion

Implied probability, decimal, American, fractional
Implied probabilityP
66.5%
= price
Decimal oddsEU
1.504
total return per $1
AmericanUS
-199
risk $199 to win $100
FractionalUK
0.50 / 1
profit per $1 risked
Profit per $100stake
+$50.38
clean dollar framing
-1000-5000+500+1000020406080100you · 66.5%implied probability (%)American odds
underdog (+)favorite (-)your price
Five views of the same number.

§4b · Time & annualized return

Time & APR · capital lockup vs annualized return
APR 33% · APY 39%ROI 1.9% over 21d · 17.4 turns/yr
Time to resolvehorizon
21.0 d
504h capital lockup
Raw ROIper resolve
+1.9%
APR (simple)scaled
+33%
ROI × 365/days
APY (compounded)if redeployed
+39%
(1+ROI)^(365/d) − 1
Daily expectedper day
+0.09%
geometric, per day held
Capital turns/yrvelocity
×17.4
how often this slot recycles
0%154%307%461%615%768%121416180100120now 21ddays to resolutionannualized return (capped 1000%)
simple APRcompounded APYyour horizon
Rank positions by APR, not raw ROI. A thin edge tomorrow beats a fat edge next year.

§5 · Costs & net edge

Cost waterfall · gross edge → net of friction
Net edge +0.52 pperosion 59% · break-even w/ fees 67.3%
-0.1pp0.3pp0.6pp1.0pp1.3pp1.7pp+1.27Gross edge-0.75- ½ spread+0.00- entry fee+0.00- exit fee+0.52Net edgeEV / share (pp)
gross edgefrictionnet edgefee 0 bps · spread 1.50¢
The number that decides whether to trade.

§6 · Sizing menu

Sizing menu · disciplined deployment
Full Kellyf★
$950
3.80% · g = 0.037%
Half Kelly½ f★
$475
1.90% · g = 0.027%
Quarter Kelly¼ f★
$237
0.95% · g = 0.016%
Flat 1%1%
$250
1.00% · g = 0.017%
Flat 2%2%
$500
2.00% · g = 0.028%
Flat 5%5%
$1,250
5.00% · g = 0.033%
Recommended¼ f★
$237
survives model error
$0$369$738$1,106$1,475$950Full Kelly3.80%$475Half Kelly1.90%$237Quarter Kelly0.95%$250Flat 1%1.00%$500Flat 2%2.00%$1,250Flat 5%5.00%
Quarter-Kelly is the industry default — survives model error far better than full Kelly.

§7 · Information theory

Binary entropy · uncertainty in bits
Market entropyH(p)
0.920 bit
max 1.0 at p = 0.5
Your entropyH(q)
0.907 bit
Δ -0.013 bit vs market
Surprise · YES−log₂ p
0.59 bit
self-information
Surprise · NO−log₂(1−p)
1.58 bit
self-information
0.000.260.530.791.050.00.20.40.60.81.0marketmodelprobabilityH (bits)
H(p) peaks at p = 0.5 (one bit of irreducible doubt).
KL divergence · upper bound on exploitable edge
NOISE · D_KL(q ‖ p) = 0.0004 nat (0.0005 bit)belief ≈ market — stand down
-0.016-0.0080.0000.0090.0170.0128YES branch-0.0125NO branchΣKL = 0.0004 natKL contribution (nat)
YES contributionNO contributionbelief ‖ marketnoise
Zero KL ⇒ you know nothing the crowd doesn't.

§8 · Bayesian inference

Bayesian posterior · prior + evidence → belief with 95% CI
MARKET PRICE INSIDE 95% CIposterior μ 0.678 · CI [0.56, 0.79] · κ 59.7
Posterior meanE[θ]
0.678
Beta(40.4, 19.2)
95% credible intervalHDI
[0.56, 0.79]
price INSIDE → weak edge
Concentrationκ
59.7
pseudo-obs behind belief
Disagreementvs crowd
+1.3 pp
posterior − price
0.000.200.400.600.801.00marketposterior μprobability θposterior density
market prior (dashed)model posterior95% credible bandmarket price
When the market price falls outside the 95% credible interval, your disagreement is statistically meaningful.

§9 · Tail risk · Monte-Carlo (mode A · single position to resolution)

Mark-to-market MC · single position held to resolution
E[P/L] -0.8% · P(YES) 66.0% · VaR₉₅ 100.0%400 paths · 504 bars to resolution
Expected P/Lper $1
-0.75%
P(YES) empiricalq
66.0%
Best pathmax
+50.4%
Worst pathmin
-100.0%
VaR 95%5%
100.0%
CVaR 95%ES
100.0%
25¢50¢75¢100¢084168252336420504entry 66.5¢model q 67.8¢bars until resolutionprice path
median path25/75 + 5/95 bandsentry pricemodel q
Logit-space mean-reverting walk + terminal flip with probability q. Answers: 'what happens to THIS one position'. Distinct from the repeated-edge fan below.

§9b · Tail risk · Monte-Carlo (mode B · repeated independent edges)

Monte-Carlo equity fan · this profile, repeated 400× independently
Median CAGR/bet 0.02% · ruin rate 0.0%400 paths × 120 bets · f deploy 1.90%
Sharpe / betμ/σ
0.033
μ 0.04% · σ 1.3%
Sortino / betμ/σ↓
0.023
downside-only denominator
VaR 95%5%
-1.9%
per-bet worst-case
CVaR 95%ES
-1.9%
mean tail loss
Max drawdownMDD
-2.9%
Calmar 0.01
Ruin rate≤50%
0.0%
P(equity ever ≤ 50%)
0.77×0.89×1.02×1.14×1.27×1.39×020406080100120startruin 50%bet #bankroll multiple
median25/75 band5/95 bandruin line
Answers a different question: 'if I could find this exact edge forever, what is the bankroll trajectory'. Compounds 120 sequential resolutions which is NOT what happens to a single position.

§10 · Base-rate & macro context

Probability stack · base rate vs crowd vs model
ANCHORED · supported by convictionanchor gap +19.6pp · crowd gap +18.3pp
0%20%40%60%80%100%Reference base rate48.2%Market price66.5%Model P(YES)67.8%
Anchor gapmodel − base
+19.6 pp
Crowd gapprice − base
+18.3 pp
Verdictdiscipline
ANCHORED
Reference-class anchoring prevents narrative-driven blowups.

§11 · Forecast quality (synthetic ledger)

Brier · Murphy decomposition · reliability · ROC
SKILL POSITIVE · in-sample BSS 15.7% · AUC 0.747out-of-sample BSS (5-fold) 15.7% ± 2.0% · Brier 0.2100 · log-loss 0.6266 · n 1600n = 1600
BrierBS
0.2100
lower = better · ō 0.53
BSSvs base
15.7%
improvement over base rate
ReliabilityREL
0.0087
miscalibration · want ↓
ResolutionRES
0.0469
decisiveness · want ↑
Log lossLL
0.6266
cross-entropy
AUCROC
0.747
0.5 coin · 1.0 oracle
0.00.20.40.60.81.00.00.20.40.60.81.0stated probability fobserved frequency ō0.00.20.40.60.81.00.00.20.40.60.81.0AUC = 0.747false positive ratetrue positive rate0.0000.0750.1490.2240.2990.249UNC0.047RES0.009REL0.210BRIERcontribution
calibration curveROCUNC (irreducible)RES (skill, ↑)REL (miscalib, ↓)
Computed on a seeded synthetic forecast ledger. Reseed (⟳) to redraw.

§12 · Journal vitals (synthetic ledger)

Track record · win rate · PF · expectancy · CLV · equity curve
BLEEDING · PF 0.85 · expectancy -0.081R180 trades · win 47.2% · Sharpe -0.078
Total P/Lnet
-$3,635
on $45,000 cycled
Win ratehit %
47.2%
85 W / 95 L
Profit factorPF
0.85
$ won / $ lost
Expectancyper trade
-$20.20
avg $ per position
R-expectancyper risk
-0.081R
in units of risk taken
Avg win / losspayoff
$236.64 / -$250.00
ratio 0.95 : 1
Sharpe / traderisk-adj
-0.078
μR / σR
Closing line valueCLV
+2.31 pp
avg edge vs close
-$3,635-$2,150-$664$821$2,30703672108144180trade #cumulative P/L (USD)
cumulative P/Lprofitable zonered zonesynthetic · seeded from asset
The scorecard every trader checks. Synthetic ledger seeded from the asset slug — recomputes against your real fill history once wired.

▸ Advanced metrics · M2M bundle

polymarket · will-brazil-win-group-c-in-the-2026-fifa-world-cup · fresh · feed 16s old
24h sparkline · 60 pts
realized vol (ann.)
0.00%
max drawdown
0.00%
sharpe
ulcer index
0.00%
RMS drawdown
pain index
0.00%
mean drawdown
mod. VaR 95%
0.00%
Cornish-Fisher
martin ratio
ret / ulcer
CDaR 95%
0.00%
cond. drawdown
gain/pain
Σgain / Σ|loss|
sterling
ret / CDaR
omega (θ=0)
1.00
upside/downside
roll spread
0.0 bps
implied (price-only)
bars used
551
store
spread
24h Δ
flow lean
carry
flat
signalNEUTRALconfidence 20%
Same bundle via M2M API: /api/m2m/pm-will-brazil-win-group-c-in-the-2026-fifa-world-cup/bundle · venue execution: polymarket